Resource application and allocation method, ue, network control unit, and storage medium

ABSTRACT

Provided are a resource request method and device, and the method includes: transmitting low latency traffic information to a network control unit; and receiving resource allocation information formed from resource allocation performed by the network control unit based on the low latency traffic information. Embodiments of the present disclosure provide a computer storage medium.

CROSS REFERENCE TO RELATED APPLICATION

This application is a continuation of U.S. patent application Ser. No.16/075,118 filed on Dec. 27, 2018, which is a national stageapplication, filed under 37 U.S.C. 371, of International PatentApplication NO. PCT/CN2017/072472, filed on Jan. 24, 2017, which claimspriority to Chinese patent application NO. CN201610077663.2 filed onFeb. 3, 2016, contents of all of which are incorporated herein byreference in their entireties.

TECHNICAL FIELD

The present disclosure relates to resource request and allocationtechnologies in a communication field, and in particular, to a resourcerequest method, a resource allocation method, a user equipment (UE), anetwork control unit, and a storage medium.

BACKGROUND

With an increase in vehicles, how to reduce traffic accidents, and howto timely mount a rescue and coordinate on-site traffic after trafficaccidents are problems that need to be solved in existing traffic. Withthe development of communication technologies and electronictechnologies, in-vehicle devices are configured on vehicles forperforming various information interactions, for example, theinformation may be accident warning information, traffic conditionprompt information, and the like. It has become a new way for countriesto try to solve road traffic safety problems by using acommunication-based collision warning system, which employs advancedwireless communication technologies and a new generation of informationprocessing technologies, to implement real-time information interactionsbetween vehicles and between vehicles and roadside infrastructure, toinform each other of the current status (including position, speed,accelerated speed and traveling path of the vehicle) and the known roadenvironment information, to cooperatively acquire road hazardconditions, and to provide various types of collision warninginformation in time to prevent road traffic safety accidents.

Vehicle-to-Everything Communications (V2X) refers to providing vehicleinformation through sensors, in-vehicle terminals and electronic tagsmounted on vehicles, implementing Vehicle-to-Vehicle Communication(V2V), Vehicle-to-Pedestrian Communications (V2P),Vehicle-to-Infrastructure Communications (V2I) andVehicle-to-Infrastructure/Network Communications (V2I/V2N) by usingvarious communication technologies, and effectively using information byway of extraction, sharing, etc. and effectively controlling andproviding comprehensive services for vehicles on an information networkplatform.

Currently, the 3rd Generation Partnership Project (3GPP) is discussingthe V2X based on Long Term Evolution (LTE). According to the currentdefinition of 3GPP, the V2X traffic is a communication service thattransmits or receives information with the participation of UEs through3GPP by use of a V2V application. Based on the other party participatingin the communication, the V2X traffic may be further divided into a V2Vtraffic, a V2I traffic, a V2P traffic, and a V2N traffic. The V2Ptraffic refers to a traffic that uses a V2P application forcommunication between UEs. The V2N traffic refers to a traffic in whicha UE and a service entity use a V2N application to communicate with eachother through an LTE network entity. The V2I traffic refers to a trafficin which a UE and a Road Side Unit (RSU) use a V2I application forinteraction. The RSU is an entity that supports the V2I traffic, maysend the V2I traffic to UEs that use the V2I application, or may receivethe V2I traffic from UEs that use the V2I traffic. The RSU may beimplemented by a base station (eNB) or a stationary UE. If implementedby a base station, the RSU is called an eNB type RSU. If implemented bya UE, the RSU is called a UE type RSU. The V2V traffic refers to aservice that uses a V2V application for communication between UEs. V2Vincludes the V2V-related application information directly interactedbetween UEs, or the V2V-related application information interactionsbetween UEs through infrastructure (for example, the RSU, an applicationserver, and the like) that supports the V2X traffic due to a limitationof direct communication range in V2V.

In addition, 3GPP also discusses three scenarios of V2V, as shown inFIGS. 1A-1D.

Scenario 1 is a scenario that supports V2V communication based only on aPC5 interface. A UE sends a V2X message to multiple UEs in the localarea through the PC5 interface.

Scenario 2 is a scenario that supports V2V communication based only on aUu interface. The UE transmits, via uplink, a V2X message to theenhancements for Evolved Universal Terrestrial Radio Access Network(E-UTRAN), and the E-UTRAN broadcasts, via downlink, the V2X message tomultiple UEs in the local area.

Scenario 3 is a scenario that may be further divided into Scenario 3aand Scenario 3b, and supports V2V communication by using a Uu interfaceand a PC5 interface. The UE sends the V2X message to other UEs throughthe PC5 interface. A terminal type Remote Subscriber Unit (RSU) receivesthe V2X message from the PC5 interface and transmits the V2X message tothe E-UTRAN via uplink. The E-UTRAN broadcasts, via downlink, the V2Xmessage received from the terminal type RSU to a plurality of UEs in thelocal area. Alternatively, the UE sends the V2X message to the E-UTRANvia uplink, the E-UTRAN transmits the V2X message to one or moreterminal type RSUs after receiving the V2X message from the Uuinterface, and the terminal type RSU transmits the V2X message receivedfrom the E-UTRAN to multiple UEs in the local area through the PC5interface.

On one hand, according to the current discussion, the latencyrequirement of most V2V/V2I/V2P traffic is 100 milliseconds or even 20milliseconds. However, the latency requirement may not be satisfied byusing the existing uplink cellular and PC5 interface resource allocationmodes, and especially for scenario 3, the latency requirement cannot bemet according to the existing resource allocation method.

On the other hand, if receiving and transmitting parties use the samefrequency band for communication and the two parties send messages atthe same sub-frame location when using the PC5 interface forcommunication, the two parties cannot receive information from eachother at the same time due to the influence of half-duplex, which leadsto a missing of messages from other terminals. This above situationcannot be completely avoided even if a retransmission solution is used.If the number of retransmissions is too large, excessive latency will becaused, which is beyond the latency requirement.

SUMMARY

In view of the above, a resource request method, a resource allocationmethod, a UE, a network control unit, and a storage medium thatembodiments of the present disclosure are expected to provide at leastpartially solve the above-mentioned problems.

The technical solution of the present disclosure is implemented asfollows.

A first aspect of embodiments of the present disclosure provides aresource request method, including: transmitting low latency trafficinformation to a network control unit; and receiving resource allocationinformation formed from the resource allocation performed by the networkcontrol unit based on the low latency traffic information.

A second aspect of embodiments of the present disclosure provides aresource allocation method, including: receiving low latency trafficinformation transmitted by a user equipment (UE); performing resourceallocation according to the low latency traffic information to achieve aresult of the resource allocation; and transmitting resource allocationinformation to the UE according to the result of the resourceallocation.

A third aspect of embodiments of the present disclosure provides a UE,including: a first transmitting unit, configured to transmit low latencytraffic information to a network control unit; and a first receivingunit, configured to receive resource allocation information formed fromresource allocation performed by the network control unit based on thelow latency traffic information.

A fourth aspect of embodiments of the present disclosure provides anetwork control unit, including: a second receiving unit, configured toreceive low latency traffic information transmitted by a UE; anallocating unit, configured to perform resource allocation according tothe low latency traffic information to achieve a result of the resourceallocation; and a second transmitting unit, configured to transmitresource allocation information to the UE based on the result of theresource allocation.

A fifth aspect of embodiments of the present disclosure provides anon-transitory computer storage medium, which is configured to storecomputer-executable instructions for executing the above resourcerequest methods.

For the resource request method, resource allocation method, the UE, thenetwork control unit, and the computer storage medium provided by theembodiments of the present disclosure, the UE transmits low latencytraffic information to the network control unit, so that the networkcontrol unit allocates resources according to the low latency trafficinformation, and the allocated resources can meet the low latencyrequirements of low latency traffic.

BRIEF DESCRIPTION OF DRAWINGS

FIGS. 1A-1D are schematic diagrams of V2X application scenariosaccording to an embodiment of the present disclosure.

FIG. 2 is a flowchart of a first resource request method according to anembodiment of the present disclosure.

FIG. 3 is a flowchart of a second resource request method according toan embodiment of the present disclosure.

FIG. 4 is a structural diagram of a UE according to an embodiment of thepresent disclosure.

FIG. 5 is a structural diagram of a network control unit according to anembodiment of the present invention;

FIG. 6 is a flowchart of a third resource request method according to anembodiment of the present disclosure.

FIGS. 7 and 8 are schematic diagrams of signaling formats of a MAC CEaccording to an embodiment of the present invention.

FIG. 9 is a flowchart of a fourth resource request method according toan embodiment of the present disclosure.

FIG. 10 is a flowchart of a fifth resource request method according toan embodiment of the present disclosure.

FIGS. 11 and 12 are schematic diagrams of signaling formats of a MAC CEaccording to an embodiment of the present invention.

DETAILED DESCRIPTION

The technical solution of the present disclosure is further described inconjunction with the following embodiments and accompanying drawings. Itis to be understood that preferred embodiments described herein areintended to explain and not to limit the present disclosure.

Embodiment 1

As shown in FIG. 2 , an embodiment provides a resource request method,including steps described below.

In S110, low latency traffic information is transmitted to a networkcontrol unit.

In S120, resource allocation information is received, and the resourceallocation information is formed from resource allocation performed bythe network control unit based on the low latency traffic information.

An execution subject of the resource request method described in theembodiment may be various UEs, for example, various vehicle-mounteddevices.

In the embodiment, the low latency traffic information may includeinformation related to various types of low latency traffic (which mayalso be referred to as low latency traffic patterns), and may be used asa basis concerning latency for the network control unit to allocateresources. The low latency traffic information may indicate the lowlatency traffic, and then the network control unit determines a latencyrequirement of the low latency traffic; or the low latency trafficinformation may directly characterize the latency requirement of the lowlatency traffic. In the embodiment, the low latency traffic may includea traffic corresponding to the low latency traffic information of theV2X, including the vehicle and any communication device V2X traffic.

In the embodiment, the network control unit may include a base station,a roadside unit, a relay, or a terminal capable of resource allocation.

In S120, the resource allocation information transmitted by the networkcontrol unit is received. After receiving the resource allocationinformation, the UE can acquire whether a communication resource fortransmitting the low latency traffic information is currently allocatedand various parameters such as the size and type of the allocatedcommunication resources according to the resource allocationinformation. The type of the allocated communication resources hereinmay include various resources such as time-frequency resources and coderesources, where the code resources herein may include various sequenceresources such as scrambling code resources. The size of the allocatedcommunication resources herein may include the quantity of time slots, abandwidth of frequency resource, the quantity of scrambling codes, andthe like. In this way, the UE may subsequently transmit a trafficcontent of the low latency traffic on the corresponding communicationresource according to the resource allocation information.

In the embodiment, when requesting a resource allocation for a lowlatency traffic, the UE sends not only a resource allocation request butalso the low latency traffic information to the network control unit, sothat the network control unit may allocate resources according to therequirement of resource allocation characterized by the low latencytraffic information, and meet the low latency requirement of the lowlatency traffic as much as possible when performing resource allocation.In this way, compared to the regular or high latency traffic,communication resources can be allocated to the low latency trafficfaster and the communication resources can be used in a more timelymanner for communication, thereby achieving low latency.

Further, the low latency traffic information includes one or more of thefollowing various types of information.

The first is low latency traffic type information. The low latencytraffic type information is used for indicating a type of the lowlatency traffic. The type of the low latency traffic includes V2Xtraffic. The V2X traffic may include V2V traffic, V2I traffic, V2Ptraffic, or V2N traffic. Therefore, the low latency traffic typeinformation described in the embodiment may include one piece or more ofthe following information: Vehicle-to-Everything traffic typeinformation, which is at least used for indicating a type of the V2Xtraffic; Vehicle-to-Vehicle Communication (V2V) traffic typeinformation, which is at least used for indicating a type of the V2Vtraffic; Vehicle-to-Infrastructure Communications (V2I) traffic typeinformation, which is at least used for indicating a type of the V2Itraffic; Vehicle-to-Pedestrian Communications (V2P) traffic typeinformation, which is at least used for indicating a type of the V2Ptraffic; Vehicle-to-Network Communications (V2N) traffic typeinformation, which is at least used for indicating a type of the V2Ntraffic; event triggering traffic type information, which is used forindicating various types of low latency traffic triggered when aspecified event occurs, for example, a type of the V2X traffic triggeredwhen a specified event occurs; and periodically transmitting traffictype information, which is at least used for indicating various types oflow latency traffic transmitted periodically, for example, a type of theV2X traffic transmitted periodically.

Various types of V2X traffic are described in the embodiment such as thetype of the V2X traffic, the type of the V2V traffic, and the like.

The second is a low latency traffic priority (which may be also referredto as priority information), which is used for indicating a priority ofthe type of the low latency traffic.

The third is a first Quality of Service (QoS) Class Identifier (QCI)indication information, where the first QCI indication information isused for indicating a latency and/or a reliability requirement level ofa low latency traffic.

The fourth is moving speed level indication information, which is usedfor indicating a moving speed level of a UE.

The fifth is resource type indication information, where the resourcetype information is used for indicating a resource type required by thelow latency traffic. The resource type indication information mayinclude interface type indication information, where the interface typeindication information herein may include Uu interface type indicationinformation, and/or PC5 interface type indication information. The Uuinterface type indication information may at least be used forindicating a Uu interface resource, and the PC5 interface typeindication information may at least be used for indicating a PC5interface resource.

The sixth is resource period information (which may be also referred toas resource periodicity), which is used for indicating a transmissionperiod of low latency traffic information that is periodicallytransmitted.

The seventh is resource pattern information, including an expectedsub-frame offset information to be allocated (that is, the offsetinformation (which may also be referred to as the offset) is used forindicating an expected sub-frame to be allocated).

The eighth is resource size information, which is used for indicating asize of resources to be allocated.

The ninth is positioning information, which is used for determininglocation information of a UE. In the embodiment, the positioninginformation may include at least one piece of the following information:geographic location information of the UE, which is used for indicatinga geographic location when the UE is ready for sending the low latencytraffic information; a moving speed of the UE, a moving speed of the UErelative to the ground or relative to a network equipment capable ofproviding communication services, where the moving speed may be anabsolute value of the moving speed, or may be information such as alevel to which the moving speed belongs; motion trajectory of the UE,where the motion trajectory of the UE herein may be a predicted motiontrajectory at the moving speed after the current moment; geographiclocation measurement time of the UE, where the geographical locationmeasurement time herein is the time when the UE determines the foregoinggeographical location information.

The tenth is the first logical channel identity (LCID) information,which is used for indicating a logical channel or a logical channelgroup (LCG) that uses resources. The logical channel identity herein maybe a logical channel or a logical channel group for indicatingsemi-persistent scheduling resources.

The eleventh is Buffer State Report (BSR) information, which is used forindicating buffer state information of the low latency traffic for whichthe resources are requested.

In a specific implementation, the positioning information furtherincludes the following information: location identity information,determined based on a current geographic location of the UE andgeographic area range identity mapping information, and the geographicarea range identity mapping information is used for characterizingmapping relationships between the geographic area and the locationidentity.

For example, the base station partitions cells formed by its coverageagain, partitions the cells into multiple geographical areas, and setslocation identities for these geographical areas. In the embodiment, thelocation identity may be a location identity of a cell where the UE islocated. Each of the location identities can represent a geographicarea. In this case, the base station, as the network control unit, candetermine in which geographical area of the cell formed by the coverageof the base station the UE is located after receiving the locationidentity transmitted by the UE.

The method further includes receiving geographic area range identitymapping information transmitted by the network control unit.

In the embodiment, the network control unit will transmit the geographicarea range identity mapping information before receiving the low latencytraffic information. For example, the network control unit transmits thegeographical area range identity mapping information by broadcasting ormulticast. For another example, the UE receives the geographic arearange identity mapping information by receiving a system message or aproprietary message transmitted by the network control unit. In theembodiment, the proprietary message may include a proprietary RadioResource Control (RRC) message.

In a specific implementation process, there are many types ofgeographical areas. In the embodiment, the geographic areas are dividedaccording to the shape of the areas, and may include a circular area anda rectangular area. At this time, the geographic area range identitymapping information includes at least one of the following: a centrallocation list, radius information and a location identity of thecircular area; and location information of three vertices and a locationidentity of the rectangular area.

For the circular area, after the UE detects the direct geographiclocation, the UE compares the location information of its own with thecentral location of the circular area, and determines the circular areawhere the UE is currently located according to the radius information ofthe circular area. The UE transmits the location identity of thecircular area to the network control unit after determining the circulararea where the UE is currently located.

For the rectangular area, after the UE detects a direct geographiclocation, the UE compares the location information of its own with thelocation information of the three vertices of the rectangular area andachieves a comparison result. The UE determines the rectangular areawhere the UE is located according to the comparison result. The UEtransmits the location identity of the rectangular area to the networkcontrol unit after determining the rectangular area where the UE islocated.

In the embodiment, the step S110 may specifically include informationdescribed below.

The low latency traffic information is transmitted by using the radioresource control (RRC) message.

The RRC message herein may include messages such as a side-link UEinformation message, a UE information response message, a low latencytraffic indication message, or V2X service indication information.Therefore, the step S110 may specifically include that the low latencytraffic information is transmitted by using at least one of theSide-link UE Infomation message, a UE Information Response message, thelow latency traffic indication message, and the V2X traffic indicationinformation.

Of course in the embodiment, the step S110 may further include that theMedia Access Control (MAC) Control Element (CE) carrying the low latencytraffic information is transmitted to the network control unit.

In summary, in the embodiment, the UE transmits at least the low latencytraffic information to the network control unit when requesting theresource of the low latency traffic, and the network control unit canconveniently allocate corresponding resources according to the lowlatency traffic information, thereby meeting the latency requirements ofthe transmission of the low latency traffic information.

Embodiment 2

As shown in FIG. 3 , an embodiment provides a resource allocationmethod, including steps described below.

In S210, low latency traffic information transmitted by a UE isreceived.

In S220, resource allocation is performed according to the low latencytraffic information, and a result of the resource allocation isachieved.

In S230, Resource allocation information is transmitted to the UEaccording to the result of the resource allocation.

The method described in the embodiment is applied to the network controlunit. In the embodiment, the network control unit may be a communicationnode capable of resource scheduling or allocation, such as a basestation, a roadside unit, or a relay node. In the embodiment, the lowlatency traffic may include the aforementioned V2X traffic.

When allocating resources in response to a resource request, the networkcontrol unit described in the embodiment performs the resourceallocation according to the low latency traffic information to meet theresource requirements of low latency traffic as much as possible, forexample, to meet the latency requirement of resources.

Resource allocation will be performed in S220, and resource allocationinformation will be transmitted to the UE based on the result of theresource allocation in S230. In this way, the UE transmits a trafficcontent of the low latency traffic on the corresponding resourceaccording to the resource allocation information.

In summary, in the embodiment, the network control unit can also receivelow latency traffic information when responding to the resource request,and the low latency traffic information is an allocation basis on whichthe network control unit allocates resources. This makes it possible todistinguish low latency traffic from common latency traffic to meet lowlatency requirement of low latency traffic.

The content of the low latency traffic information is specificallydescribed below. The low latency traffic information includes at leastone of the following information.

Low latency traffic type information is used for indicating a type ofthe low latency traffic.

A low latency traffic priority is used for indicating a priority of atype of the low latency traffic.

A first Quality of Service (QoS) Class Identifier (QCI) indicationinformation is used for indicating a latency and/or a reliabilityrequirement level of the low latency traffic.

Moving speed level indication information is used for indicating amoving speed level of a UE, where the moving speed information includesthe moving speed and/or the moving speed level of the UE.

Resource type indication information is used for indicating a resourcetype required by the low latency traffic.

Resource period information is used for indicating a transmission periodof low latency traffic information that is periodically transmitted.

Resource pattern information includes an expected sub-frame offsetinformation to be allocated.

Resource size information is used for indicating a size of resources tobe allocated.

Positioning information is used for determining location information ofa UE. The positioning information herein may include geographic locationinformation of the UE, moving speed of the UE, motion trajectory of theUE, and geographic location measurement time for determining thegeographic location of the UE. Of course the positioning informationfurther includes location identity information. The location identityinformation is determined based on a current geographic location of theUE and geographic area range identity mapping information. Thegeographic area range identity mapping information is used forcharacterizing mapping relationships between the geographic area and thelocation identity.

A first logical channel identity information is used for indicating alogical channel or a logical channel group that uses resources. Forexample, the first logical channel identity may be a logical channel ora logical channel identity for indicating the available semi-persistentresources (which may be also referred to as semi-persistent schedulingresources).

Buffer state report (BSR) information is used for indicating bufferstate information of a low latency traffic for which the resources arerequested.

When performing the resource allocation, the network control unitdetermines different resource allocation parameters according todifferent low latency traffic information. The following describes theoperation of resource allocation according to different low latencytraffic information in the step S220. The step S220 may include at leastone piece of the following information.

The size of resources, the resource period, and the latency requirementrequired to be allocated are determined according to the low latencytraffic type information.

The size of resources, the resource period, and the latency requirementrequired to be allocated are determined according to the low latencytraffic information and the low latency traffic priority or the firstQCI indication information. For example, the first QCI indicationinformation described in the embodiment may be used for indicating theQCI level of the available semi-persistent resources.

The geographic location at which the UE transmits the low latencytraffic is predicted according to the positioning information, anddifferent sub-frame resources are respectively allocated to two UEswithin a specified distance range according to the geographic location.

The resource type required to be allocated is determined according tothe resource type indication information, and the resource allocation isperformed according to the resource type.

The transmission period of the resources required to be allocated isdetermined according to the resource period information, and resourceallocation is performed according to the transmission period.

The expected sub-frame offset information to be allocated is determinedaccording to the resource pattern information, and sub-frame resourcesare allocated according to the expected sub-frame offset information.

The size of resources required to be allocated is determined accordingto the resource size information, and resource allocation is performedaccording to the size of resources.

The logical channel identity or the logical channel identity group ofallocated resources is determined according to the first logical channelidentity information, and resources corresponding to the logical channelidentity or logical channel identity group are allocated to the lowlatency traffic for which the resources are requested.

The size of required resources is determined according to buffercapacity information.

When the low latency traffic information includes the positioninginformation, the method further includes: the geographic area rangeidentity mapping information is transmitted.

In the embodiment, the network unit transmits the geographic area rangeidentity mapping information, so that the UE determines the geographicarea where the UE is located after receiving the geographic area rangeidentity mapping information.

For example, the network control unit may transmit the geographic arearange identity mapping information through various broadcast messages ormulticast messages, for example, the geographical area range identitymapping information is transmitted through a system message, such thatthe UE within the coverage of a wireless signal of the network controlunit may receive the geographical area range identity mappinginformation.

The step that the geographic location of the UE is determined accordingto the positioning information in the S220 may include informationdescribed below.

The geographic location at which the UE transmits the low latencytraffic is predicted according to at least one of the geographiclocation information of the UE, the moving speed of the UE, the motiontrajectory of the UE, and the geographic location measurement time fordetermining the geographic location of the UE. As a further improvementof the embodiment, the step S220 herein may further include that:different sub-frame resources are allocated to two UEs within aspecified range according to the geographic location, thereby avoidingco-channel interferences, reducing retransmission and improving theresponse rate of the traffic.

The step S220 may include that: resource allocation of thesemi-persistent resources is performed according to the low latencytraffic information. The step S230 may include that: resource allocationinformation of one or more semi-persistent resources is transmitted. Inthe embodiment, the resource allocation performed by the network controlunit is a resource allocation of semi-persistent resources.

Specifically, the semi-persistent scheduling configuration information(which may also be referred to as resource allocation information of thesemi-persistent resources) includes at least one of the followinginformation.

The semi-persistent resource type information is used for indicating atype of an interface used by the semi-persistent resources. Theinterface type herein may include a Uu interface or a PC5 interface.

The traffic type information using semi-persistent resources is used forindicating the type of the low latency traffic using the semi-persistentresources. In the embodiment, the currently allocated semi-persistentresources may be used by which services. For example, the V2V trafficand V2N traffic of the V2X traffic may be specified to use the allocatedsemi-persistent resources according to the traffic type informationusing the semi-persistent resources.

In the embodiment, the semi-persistent scheduling configurationinformation further includes at least one of the following information.

The second QCI indication information is used for indicating a QCI levelof the traffic of the available semi-persistent resources. Secondlogical channel information is used for indicating a logical channel ora logical channel group of the available semi-persistent resources.

In the embodiment of the present disclosure, “first” and “second” haveno special meaning, just to distinguish the QCI indication informationor logical channel information and the like transmitted by differentnetwork elements.

In this case, when performing the resource allocation, the UE candetermine the QCI level, the logical channel information, the logicalchannel group information and the like of the available semi-persistentresources according to the second QCI indication information.

For the transmission of the resource allocation information of one ormore semi-persistent resources, the radio resource control (RRC) messageis used for transmitting the resource allocation information of thesemi-persistent resources. The type of the message specifically includedin the RRC message herein may refer to the previous embodiment.

In summary, the resource allocation method in the embodiment performsthe resource allocation by receiving the low latency trafficinformation, thereby meeting low latency requirement of low latencytraffic.

Embodiment 3

As shown in FIG. 4 , an embodiment provides a UE, including: a firsttransmitting unit 110 and a first receiving unit 120.

The first transmitting unit 110 is configured to transmit low latencytraffic information to a network control unit.

The first receiving unit 120 is configured to receive resourceallocation information formed from resource allocation performed by thenetwork control unit based on the low latency traffic information.

The UE provided in the embodiment may be one of various terminal devicessuch as vehicle-mounted devices.

The first transmitting unit 110 and the first receiving unit 120 bothcorrespond to communication interfaces. In the embodiment, thecommunication interfaces are usually wireless interfaces, such as mobileantenna of vehicle-mounted devices and the like.

In the embodiment, when the UE requests resources, the firsttransmitting unit 110 not only transmits the resource request, but alsotransmits the low latency traffic information, so that the networkcontrol unit can easily performs the resource allocation based on thelow latency traffic information, thereby meeting the latency requirementof low latency traffic.

The content of the low latency traffic information in the embodiment maybe referred to Embodiment 1 or Embodiment 2, and is not repeated here.

The first receiving unit 120 is further configured to receive geographicarea range identity mapping information transmitted by the networkcontrol unit. The first transmitting unit 110 is further configured totransmit location identity information in the low latency trafficinformation, where the location identity information is determined basedon a current geographic location of the UE and the geographic area rangeidentity mapping information, and the geographic area range identitymapping information is used for characterizing a mapping relationshipbetween a geographic area and a location identity.

In the embodiment, the first receiving unit 120 of the UE receives thegeographic area range identity mapping information, so that the UElocates its current geographic location through various positioningstructures such as a Global Position System (GPS) chip. Variousprocessing chips of the UE, such as a central processing unit (CPU), amicroprocessor, or a digital signal processor, determines the geographicarea location identity corresponding to the location of the UE accordingto the geographic area range identity mapping information. The UEtransmits the location identity to the network control unit, and thenetwork control unit knows the location of the UE. This facilitates thenetwork control unit to allocate resources according to the location ofeach UE, and avoids problems such as co-channel interference.

In summary, the UE described in the embodiment may be used to implementone or more technical solutions of the resource request method inEmbodiment 1, to transmit the low latency traffic information based onwhich the network control unit can allocate resources, thereby reducingproblems that a large latency of the low latency traffic is caused dueto a late allocation and a latency in the use of resources.

Embodiment 4

As shown in FIG. 5 , an embodiment provides a network control unit,including: a second receiving unit 210, an allocating unit 220 and asecond transmitting unit 230.

The second receiving unit 210 is configured to receive low latencytraffic information transmitted by a UE.

The allocating unit 220 is configured to perform resource allocationaccording to the low latency traffic information.

The second transmitting unit 230 is configured to transmit resourceallocation information to the UE based on a result of the resourceallocation.

The network control unit described in the embodiment may include variouscommunication nodes capable of allocating resources, such as a basestation, a relay node, or a roadside unit.

The second receiving unit 210 and the second transmitting unit 230correspond to a communication interfaces, and the communicationinterfaces can perform information interaction with the UE.

In the embodiment, the second receiving unit 210 receives low latencytraffic information, and the allocating unit 220 performs the resourceallocation based on the low latency traffic information. The allocatingunit 220 herein may correspond to various processors or processingcircuits in the network control unit. The structure of the processor andthe processing circuit herein may refer to the corresponding descriptionin the foregoing embodiments.

In a specific implementation process, the second transmitting unit 230is further configured to sending the geographic area range identitymapping information, etc., so that the UE determines the geographic areawhere the UE is currently located according to the geographic area rangeidentity mapping information.

In summary, the network control unit described in the embodiment may beused to implement one or more technical solutions of the resourceallocation method in Embodiment 2, receive the low latency trafficinformation, and perform the resource allocation based on the receivedlow latency traffic information, thereby reducing problems that a largelatency of the low latency traffic is caused due to the late allocationand the latency in the use of resources.

Several specific application examples are provided below in conjunctionwith any of the above embodiments.

Example 1

In the example, after being started, a vehicle device A is connected tothe LTE network, and transmits V2X service information periodically toindicate a speed, motion trajectory, and the like, to surroundingvehicles. Therefore, the vehicle device A needs to send a request forrequesting resource of transmitting V2X messages to the network side.The example is based on the foregoing resource request method and/orresource allocation method. As shown in FIG. 6 , the following steps maybe taken to request resources.

In step 1, the vehicle device A transmits V2X traffic information to abase station by using a proprietary RRC message, where the V2X trafficinformation includes: V2X traffic type information, the low latencytraffic priority, QCI indication information, resource type indicationinformation, and/or speed information.

The V2X traffic type information includes: Vehicle-to-Everything servicetype information, V2V traffic type information, V2I traffic typeinformation, V2P traffic type information, V2N traffic type information,event triggering traffic type information, and periodically transmittingtraffic type information.

The low latency traffic priority is used for indicating a priority ofthe low latency traffic.

The QCI indication information is used for indicating a priority and alatency requirement level of the low latency traffic.

The RRC message may include a side-link UE information message, a UEinformation response message, a low latency traffic indication message,or V2X traffic indication information.

In step 2, the base station determines the size and the resource periodof required resources according to the V2X traffic type information, thelow latency traffic priority, or the QCI indication information. If V2Xtraffic type information further includes speed level information, thebase station further needs to determine the resource period of requiredresources according to the speed level information.

The base station determines, according to the resource type indicationinformation, whether the vehicle device A requests a PC5 resource or aUu resource, thereby determining the transmitted range of the resourcepool for the vehicle device A, and allocates a time-frequency resourcesto the vehicle device A in conjunction with the resource size and theresource period.

In step 3, the base station transmits the resource allocationinformation to the vehicle device A. Specifically, if traffic typeinformation reported by the vehicle device A indicates that theinformation is periodically transmitted information, the base stationtransmits one or more semi-persistent scheduling configurationinformation by using the proprietary RRC message. The semi-persistentscheduling configuration information includes the following information.

The resource type indication information of the semi-persistent resourceis used for indicating whether the scheduled semi-persistent resource istransmitted through the PC5 interface or the Uu interface.

The traffic type information using the semi-persistent resource is usedfor indicating which traffic information is transmitted by using thescheduled semi-persistent resource, and includes specific low latencytraffic type information, for example, Vehicle-to-Everything traffictype information, V2V traffic type information, V2I traffic typeinformation, V2P traffic type information, V2N traffic type information,event triggering traffic type information, and periodically transmittingtraffic type information, or more specifically the traffic typeinformation includes emergency vehicle warning information, road safetyservice information, and the like.

Further, step 3 may be followed by step 4. In step 4, the vehicle deviceA receives the allocation information allocated by the base station,determines transmitting resources according to the resource allocationinformation, and transmits V2X messages on the transmitting resources.

Example 2

The difference between the Example 2 and Example 1 is described asfollows.

In step 1, the low latency traffic information transmitted by thevehicle device A may further include: resource type indicationinformation, resource period information, resource pattern information,and resource size information.

In step 2, after receiving the above information, the base station maydetermine the sub-frame pattern that the vehicle device A needs to beallocated according to the resource pattern information. The basestation allocates resources according to the requirement of the vehicledevice A such that the allocated sub-frame position is consistent withthe time when the vehicle device A generates the V2X message. Forexample, according to the requirement plan, the vehicle device Agenerates the V2X message in the nth sub-frame and transmits the V2Xmessage to the underlying layer, and the base station allocates the(n+1)th sub-frame to the vehicle device A, thereby minimizing thetransmission latency.

Example 3

The example provides a resource allocation method, including stepsdescribed below.

In step 11, the vehicle device A carries the Buffer State Report (BSR)information of the low latency traffic through the MAC CE. The MACsub-header corresponding to the MAC CE includes a proprietary logicalchannel identity (LCD).

Referring to FIG. 7 , the BSR information of the low latency trafficincludes the V2X LCID and buffer size of the low latency traffic. Thebuffer size herein may correspond to buffer capacity. Alternatively,referring to FIG. 8 , the BSR information of the low latency trafficincludes the logical channel group identity and the buffer capacity ofthe low latency traffic. The MAC CE shown in FIG. 7 includes 3 bytes,which are respectively byte 1, byte 2, and byte 3, and each byte iscomposed of a logical channel identity and a buffer size. The MAC CEshown in FIG. 8 includes 4 bytes, which are respectively byte 1, byte 2,byte 3, and byte 4.

In step 12, the base station determines that the MAC CE is used forindicating the BSR information of the low latency traffic through theproprietary LCID in the MAC Sub-header corresponding to the MAC CE. Thenthe base station determines resources that the vehicle device A requestfor transmitting the low latency traffic such as V2X, and allocates thetime-frequency resources according to the size of the request resourceand the latency traffic type priority determined by the LCID or the LCGID.

In step 13, the base station transmits the resource allocationinformation to the vehicle device A. If the information indicated by theV2X LCID or the LCG ID in step 1 is periodically transmittedinformation, the base station transmits one or more semi-persistentscheduling configuration information by using the proprietary RRCmessage. The semi-persistent scheduling configuration informationincludes: the resource type information and the traffic typeinformation.

The resource type indication information is used for indicating whetherthe semi-persistent scheduling resource is transmitted through the PC5interface or the Uu interface.

The traffic type information is used for indicating which trafficinformation is transmitted by using the semi-persistent schedulingresource, and includes specific low latency traffic type information,for example, Vehicle-to-Everything traffic type information, V2V traffictype information, V2I traffic type information, V2P traffic typeinformation, V2N traffic type information, event triggering traffic typeinformation, and periodically transmitting traffic type information, ormore specifically the traffic type information further includesemergency vehicle warning information, road safety service information,and the like.

If the traffic type information reported by the vehicle device A in step1 indicates that the message is an event triggering transmissionmessage, the base station uses the proprietary Radio Network TemporaryIdentity (RNTI) of the V2X to scramble the resource allocationindication information, and transmits the dynamically scheduledresources through the physical downlink control channel.

In step 14, the vehicle device A receives the resource allocationinformation of the low latency traffic transmitted by the base station,determines the transmitting resources according to the resourceallocation information, and transmits V2X messages on the transmittingresources.

Example 4

The network control unit on the network side (the network control unithere may be a base station or a high-level network element, and thehigh-level network element includes a V2X server, a V2X control functionentity, a mobility management entity (MME), a gateway, etc.) allocatesdifferent V2X LCIDs for different V2X traffic, and partitions thedifferent V2X LCIDs into different V2V LCGs according to different V2Vtraffic, such as event triggering traffic, periodically transmittingtraffic, different periods, QCI requirements, etc. Specifically, thenetwork side respectively allocates different V2V LCG IDs for the eventtriggering type V2X traffic and the periodically transmitting type V2Xtraffic. Further, for the event triggering type V2X messages, thenetwork control units allocates different V2V LCG IDs according todifferent latency requirements, priority requirements, or QCIrequirements. For periodically transmitting type V2X messages, thenetwork control unit allocates different V2V LCG IDs according todifferent period requirements, priority requirements, or QCIrequirements. As shown in FIG. 9 , the method of the example furtherincludes steps described below.

In step 21, the network control unit transmits a mapping relationshipbetween the V2V LCID and the V2V LCG ID by using a system message.

In step 22, the vehicle device A indicates the BSR information of thelow latency traffic through the MAC CE. The MAC sub-header correspondingto the MAC CE includes a proprietary LCD.

In step 23, the network control unit determines that the MAC CE is usedfor indicating the BSR information of the low latency traffic throughthe proprietary LCID in the MAC Sub-header corresponding to the MAC CE.Then the network control unit determines that the the resourcesrequested by the vehicle device A is used for transmitting the lowlatency traffic such as V2X, and allocates the time-frequency resourceaccording to the size of the request resource and the latency traffictype priority determined through the LCID or the LCG ID.

Further step 23 may be followed by step 24. In step 24, the networkcontrol unit transmits the resource allocation information to thevehicle device A. If the information indicated by the V2X LCID or theLCG ID in step 22 is periodically transmitted information, the basestation transmits one or more semi-persistent scheduling configurationinformation by using the proprietary RRC message. The semi-persistentscheduling configuration information includes: the resource typeinformation and the traffic type information.

The resource type indication information is used for indicating whetherthe semi-persistent scheduling resource is transmitted through the PC5interface or the Uu interface.

The traffic type information is used for indicating which trafficinformation is transmitted by using the semi-persistent schedulingresource, and includes specific low latency traffic type information,for example, Vehicle-to-Everything traffic type information, V2V traffictype information, V2I traffic type information, V2P traffic typeinformation, V2N traffic type information, event triggering traffic typeinformation, and periodically transmitting traffic type information, ormore specifically the traffic type information further includesemergency vehicle warning information, road safety service information,and the like.

In a specific implementation process, the network control unit uses theRNTI of the V2Xtraffic to scramble the resource allocation indicationinformation to improve information security.

In step 25, the vehicle device A receives the resource allocationinformation of the low latency traffic transmitted by the networkcontrol unit, determines the transmitting resources according to theresource allocation information, and transmits V2X messages on thetransmitting resources.

Example 5

In the example, the vehicle device B has a positioning function,acquires the location information of its own and transmits the locationinformation to the base station. Since the V2X message transmitted bythe vehicle device B needs to be correctly received by the vehiclessurrounding the vehicle device B, and the vehicles surrounding thevehicle device B may also need to transmit V2X messages, the basestation needs to allocate different sub-frames for geographicallyadjacent vehicles by considering the influence of half-duplex (theterminal cannot receive and transmit information simultaneously in thesame frequency band of the same sub-frame).

If the geographic location is reported through the RRC message, thetimeliness of reporting the geographic location is problematic (40 to 60milliseconds) since the terminal is constantly moving. The speed, themotion trajectory, and the location measurement time information alsoneed to be reported at the same time when the geographic location isreported. The base station determines the location information at whichthe terminal transmits the V2X message according to the reported speed,the motion trajectory, and the location measurement time, and avoidsallocating the same sub-frame resource to geographically adjacentvehicles that are within the expected reception range of the V2X messagetransmitted from each other. Specifically, the process may refer to FIG.10 .

In step 31, the base station transmits the indication information byusing the RRC message, where the indication information indicates theterminal to report the location information.

In step 32, the vehicle device B transmits the location information tothe base station through the measuring result information of the uplinkRRC message, where the location information includes: geographiclocation information, speed level indication information, motiontrajectory information, and measurement time indication information.

In step 33, the base station calculates the location at the current timeaccording to the geographic location information, the speed levelindication information, the motion trajectory information, and themeasurement time indication information, and allocates resources for thevehicle device B, thereby ensuring different sub-frames are allocated tothe vehicle device B and the vehicles surrounding the vehicle device Band avoiding the influence of half-duplex.

Example 6

In the example, the vehicle device B has a positioning function,acquires the location information of its own in real time and transmitsthe location information to the base station. Since the V2X messagetransmitted by the vehicle device B needs to be correctly received bythe vehicles surrounding the vehicle device B, and the vehiclessurrounding the vehicle device B may also need to transmit V2X messages,the base station needs to allocate different sub-frames forgeographically adjacent vehicles by considering the influence ofhalf-duplex (the terminal cannot receive and transmit informationsimultaneously in the same frequency band of the same sub-frame).

The difference from Example 5 is that the vehicle device B in theexample reports the location information through the MAC CE, which hasstronger timeliness.

If the geographic location is indicated by way of the latitude andlongitude and the northern and southern hemispheres, according to thedefinition of LTE in the existing art, the required overhead is 48 bits.However, the base station only needs to ensure that the differentsub-frame resources are allocated to different terminals in a certainarea, that is, the base station do not need to know too detailedlocation information. Therefore, in order to save overhead, the basestation may further partition the area covered by each cell into smallerareas, and number each smaller area. For example, the base stationpartitions the cell into N small areas, and notifies the mappingrelationship between the corresponding coordinates and the small area tothe UE by broadcasting. The UE only needs to judge the small area wherethe UE is located, and reports the corresponding index to the basestation, so that the overhead of reporting the geographical locationinformation is greatly reduced. For example, when N is 64, only 6 bitsare needed to indicate location information. Specific steps aredescribed below.

The base station transmits geographic area range identity mappinginformation. Further, the base station transmits geographic area rangeidentity mapping information by using a system message.

The following two mapping relationships may be included.

In mapping relationship 1, a list of the central location informationand the radius information of the circular area are transmitted.

For example, the list of the central location information is as follows.

Index 1 Central location information 1 Index 2 Central locationinformation 2 Index 3 Central location information 3 . . . . . .

The geographical area range corresponding to each index is determinedaccording to the geographical coordinates of the central location andthe size of the radius.

In mapping relationship 2, position information of three points in arectangular area is transmitted.

Index 1 Boundary location information 1-1, 1-2, 1-3 Index 2 Boundarylocation information 2-1, 2-2, 2-3 Index 3 Boundary location information3-1, 3-2, 3-3 . . . . . .

The geographical area range corresponding to each index is determinedaccording to the geographic coordinates of the three boundary locations.

Among them, the index #1-index #N information may be not transmitted,and obtained by the sorted position.

After acquiring the location information, the vehicle device Bdetermines, according to the geographic area range identity mappinginformation, which area range it belongs to, thereby determining thelocation information identity.

The vehicle device B transmits the location information identity to thebase station, including that the vehicle device B transmits the locationinformation identity and/or the speed level information to the basestation through the MAC CE. Or, the UE transmits the locationinformation identity indication information to the base station throughan uplink physical control channel. Or, the UE adds the locationinformation to the BSR MAC CE of the low latency traffic. A BSR MAC CEformat is shown in FIGS. 11 and 12 . It should be noted that the BSR MACCE format designed by the present disclosure does not only include theformat shown in FIGS. 11 and 12 , and any MACE CE format that includeslocation information identity; speed level information; LCD or LCG ID;and buffer size is within the scope of the present disclosure.

The base station determines the location information of the terminalthat transmits the low latency traffic information according to thelocation identity information, and allocates resources to the vehicledevice B, thereby ensuring that different sub-frames are allocated tothe vehicle device B and the vehicles surrounding the vehicle device Band avoiding the influence of half-duplex.

An embodiment of the present disclosure provides a computer storagemedium, which is configured to store computer-executable instructionsfor executing the resource request method provided by any one of theforegoing technical solutions, for example, used to execute the methodshown in any one of FIGS. 2, 3, 6, 9, and 10 .

The computer storage medium may include various storage media such as arandom storage medium, a read only storage medium, flash memory, anoptical disk, or a Digital Video Disk (DVD), and may be a non-transitorystorage medium.

It is to be understood that the device and the method disclosed inembodiments of the present disclosure may be implemented in other ways.The device embodiments described above are merely exemplary. Forexample, the unit division is merely a logical function division, and,in practice, the unit division may be implemented in other ways. Forexample, multiple units or components may be combined or may beintegrated into another system, or some features may be omitted or notexecuted. Additionally, coupling, direct coupling or communicationconnection between the presented or discussed components may be indirectcoupling or communication connection, via interfaces, between devices orunits, and may be electrical, mechanical or in other forms.

The units described above as separate components may or may not bephysically separated. Components presented as units may or may not bephysical units, i.e., may be located in one place or may be distributedover multiple network units. Part or all of these units may be selectedaccording to actual requirements to achieve objects of solutions ofembodiments of the present disclosure.

Moreover, various function units in embodiments of the presentdisclosure may all be integrated in one processing module, or each unitmay be used as a separate unit, or two or more units may be integratedinto one unit. The integrated function unit may be implemented byhardware or may be implemented by hardware plus a software functionunit.

It may be understood by those skilled in the art that all or part of thesteps in the method embodiments described above may be implemented byhardware related to program instructions, these programs may be storedin a computer-readable storage medium, and, when executed, theseprograms execute steps included in the method embodiments describedabove; and the preceding storage media includes various media capable ofstoring program codes, such as a removable storage device, a Read-Onlymemory (ROM), a Random Access Memory (RAM), a magnetic disk or anoptical disk.

The above is only the specific embodiments of the present disclosure,but the scope of the present disclosure is not limited thereto, andmodifications made in accordance with the principles of the presentdisclosure should be understood as falling within the scope ofprotection of the present disclosure.

What is claimed is:
 1. A resource request method, comprising:transmitting, by a user equipment (UE) to a base station, a radioresource control (RRC) message including low latency traffic informationfor the base station to perform semi-persistent scheduling resourceallocation for a vehicle-to-everything (V2X) traffic according to thelow latency traffic information, the low latency traffic informationcomprising: a priority parameter indicating a priority of a type of theV2X traffic among a plurality of types of the V2X traffic; resourceperiodicity indicating a transmission period of the V2X traffic; anoffset indicating an expected sub-frame to be allocated; resource sizeinformation indicating a size of the resources to be allocated; and afirst logical channel identity (LCID) information indicative of alogical channel associated with the V2X traffic; and receiving, by theUE, resource allocation information of at least one semi-persistentscheduling resource from the base station.
 2. The method of claim 1,wherein the low latency traffic information further comprises at leastone of the following: a first Quality of Service (QoS) Class Identifier(QCI) indication information indicating a latency or a reliabilityrequirement level of the V2X traffic; moving speed level indicationinformation indicating a moving speed level of the UE; or Buffer StateReport (BSR) information indicating buffer state information of the V2Xtraffic for which the resources are requested.
 3. The method of claim 1,wherein the low latency traffic information comprises informationindicating that the semi-persistent resources are transmitted via a Uuinterface.
 4. The method of claim 1, further comprising: transmittinggeographic location information of the UE to the base station.
 5. Themethod of claim 1, wherein the RRC message comprises: a Side-link UEInformation message.
 6. The method of claim 1, wherein the low latencytraffic information comprises information indicating that thesemi-persistent resource is transmitted via a PC5 interface.
 7. Aresource allocation method, comprising: receiving, by a base stationfrom a user equipment (UE), a radio resource control (RRC) messageincluding low latency traffic information for the base station toperform semi-persistent scheduling resource allocation for avehicle-to-everything (V2X) traffic according to the low latency trafficinformation, wherein the low latency traffic information comprises: apriority parameter indicating a priority of a type of the V2X trafficamong a plurality of types of the V2X traffic; resource periodicityindicating a transmission period of the V2X traffic; an offsetindicating an expected sub-frame to be allocated; resource sizeinformation indicating a size of the resources to be allocated; and afirst logical channel identity (LCID) information indicative of alogical channel associated with the V2X traffic; performing, by the basestation, semi-persistent scheduling resource allocation according to thelow latency traffic information; and transmitting, by the base station,resource allocation information of at least one semi-persistentscheduling resource to the UE.
 8. The method of claim 7, wherein the lowlatency traffic information comprises information indicating that thesemi-persistent resource is transmitted via a Uu interface.
 9. Themethod of claim 7, wherein the low latency traffic information comprisesinformation indicating that the semi-persistent resource is transmittedvia a PC5 interface.
 10. The method of claim 7, further comprising:receiving geographic location information from the UE by the basestation.
 11. The method of claim 7, further comprising: receivinggeographic location information of the UE.
 12. A user equipment (UE),comprising a processor, and a storage device for storing computerexecutable instructions that when executed by the processor cause theprocessor to: transmit to a base station, a radio resource control (RRC)message including low latency traffic information for the base stationto perform semi-persistent scheduling resource allocation for avehicle-to-everything (V2X) traffic according to the low latency trafficinformation, the low latency traffic information comprising: a priorityparameter indicating a priority of a type of the V2X traffic among aplurality of types of the V2X traffic; resource periodicity indicating atransmission period of the V2X traffic; an offset indicating an expectedsub-frame to be allocated; resource size information indicating a sizeof the resources to be allocated; and a first logical channel identity(LCID) information indicative of a logical channel associated with theV2X traffic; and receive resource allocation information of at least onesemi-persistent scheduling resource from the base station.
 13. The UE ofclaim 12, wherein the low latency traffic information includesinformation indicating that the semi-persistent resources aretransmitted via a Uu interface.
 14. The UE of claim 12, wherein the lowlatency traffic information includes information indicating that thesemi-persistent resources are transmitted via a PC5 interface.
 15. TheUE of claim 12, wherein the computer executable instructions, whenexecuted by the processor, cause the processor to transmit geographiclocation information of the UE to the base station.
 16. The UE of claim12, wherein the RRC message comprises: a Side-link UE Informationmessage.
 17. A base station, comprising a processor, and a storagedevice for storing computer executable instructions that when executedby the processor cause the processor to: receive, from a user equipment(UE), a radio resource control (RRC) message including low latencytraffic information for the base station to perform semi-persistentscheduling resource allocation for a vehicle-to-everything (V2X) trafficaccording to the low latency traffic information, wherein the lowlatency traffic information comprises: a priority parameter indicating apriority of a type of the V2X traffic among a plurality of types of theV2X traffic; resource periodicity indicating a transmission period ofthe V2X traffic; an offset indicating an expected sub-frame to beallocated; resource size information indicating a size of the resourcesto be allocated; and a logical channel identity (LCID) informationindicative of a logical channel associated with the V2X traffic; performsemi-persistent scheduling resource allocation according to the lowlatency traffic information; and transmit resource allocationinformation of at least one semi-persistent scheduling resource to theUE.
 18. The base station of claim 17, wherein the low latency trafficinformation includes at least one of: information indicating that thesemi-persistent resources are transmitted via a Uu interface; orinformation indicating that the semi-persistent resources aretransmitted via a PC5 interface.
 19. The base station of claim 17,wherein the computer executable instructions, when executed by theprocessor, cause the processor to receive geographic locationinformation of the UE.
 20. The base station of claim 17, wherein the RRCmessage comprises: a Side-link UE Information message.